City profile
Rock Island, IL
Rock Island County · Population 36,151
Rock Island is a town in Rock Island County, IL with about 36,151 residents and a typical home value near $126,000. It is 4 miles from Davenport, IA, which shapes its climate, healthcare access and amenities.
Climate
Climate type
Four seasons
Winter avg
22°F
Summer avg
76°F
Sunny days / yr
195
Home prices & cost of living
Median home price
$125,900
Typical monthly housing
$901
Cost of living (100 = U.S.)
75
Taxes
- Property tax
- 2.07%
- State income tax (top)
- 4.95%
- Social Security
- Not taxed
- Pensions
- Not taxed
- Sales tax (state + avg. local)
- 8.86%
FEMA natural hazard risk
Relatively Moderate · county score 84/100
Top hazards: Cold wave, Strong wind, Heat wave
Nearest major airport
143 mi to Chicago O'Hare International Airport (ORD)
Political lean (2024 county vote)
Competitive / purple · 54% Democratic / 44% Republican
Community
Population
36,151
Black population
17.2%
County
Rock Island County
Detailed crime figures are available for our 201 hand-researched cities.
2025–2026 trends
2026 market trends
- ▸More retirees are leaving IL than arriving, mostly over cost
- ▸Home prices are still rising in 2026 — good for long-term value, less room to negotiate
- ▸Climate/cost risks to check: severe storms
Highlights
- About 36,151 residents
- Typical home value about $126,000
- 4 miles from Davenport, IA
Trade-offs
- Scores for this place are estimated from Census data and the nearest major city
Figures are estimates from public sources (see How we match). Verify before making decisions.